This activity demonstrates optical properties of water: that different constituents in water affect the transmission, absorption, and scattering of different colors in the visible light spectrum. Inexpensive, off-the-shelf components are used to...(View More) build a light sensor and source, creating a simple spectrophotometer that can measure light absorption. In the second part of this activity, principles of ocean color remote sensing are applied to measure reflectance. Using components that are clearly visible allows students to configure them in different ways. Playing with the instrument design gives students a practical understanding of spectrophotometers, in-water optics, and remote sensing. As an extension of this concept, students are encouraged to think about how ocean color is used to estimate the concentration of chlorophyll to infer phytoplankton abundance, colored dissolved organic matter, and suspended sediments.(View Less)

This collection of math problems is based on a weekly series of space and Earth science problems distributed to teachers during the 2013-2014 school year. The problems were intended for students looking for additional challenges in the math and...(View More) physical science curriculum and were created to be authentic glimpses of modern science and engineering issues, often involving actual research data. Includes information for teachers and answer key.(View Less)

This project engages students in the science and engineering processes used by NASA Astrobiologists as they explore our Solar System and try to answer the compelling question, "Are we Alone?" Students will identify science mission goals and select...(View More) an astrobiologically significant target of interest: Mars, Europa, Enceladus or Titan. Students will then design their mission to this target in search of their chosen biosignature(s). Students will encounter the same considerations and challenges facing NASA scientists and engineers as they search for life in our Solar System. Students will need to balance the return of their science data with engineering limitations such as power, mass and budget. Risk factors play a role and will add to the excitement in this interactive science and engineering activity. Astrobiobound! will help students see how science and systems engineering are integrated to achieve a focused scientific goal. Includes an alignment document for NGSS and Common Core State Standards.(View Less)

This self-paced, interactive tutorial provides learners with an opportunity to learn about remote sensors, and the role remote-sensing instruments play in our understanding of the Earth system. Activities within the tutorial allow learners to...(View More) demonstrate for themselves how atmospheric absorption and the signal-to-noise ratio determine the spectral resolution of a remotely-sensed image. A culminating simulation activity shows learners how engineers must consider design tradeoffs between quality and quantity of data produced. This resource is part of the tutorial series, Satellite Observations in Science Education, and is the second of three modules in the tutorial, Principles in Remote Sensing. (Note: requires Java plug-in)(View Less)